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All results from a given calculation for CH2BrI (bromoiodomethane)

using model chemistry: MP2/LANL2DZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at MP2/LANL2DZ
 hartrees
Energy at 0K-63.226681
Energy at 298.15K 
HF Energy-63.078840
Nuclear repulsion energy40.120081
The energy at 298.15K was derived from the energy at 0K and an integrated heat capacity that used the calculated vibrational frequencies.
Vibrational Frequencies calculated at MP2/LANL2DZ
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
4/u)
Dep P Dep U
1 A' 3136 3020 13.21 121.92 0.08 0.14
2 A' 1436 1383 1.28 18.03 0.66 0.79
3 A' 1256 1210 71.47 0.74 0.73 0.85
4 A' 596 574 45.57 12.59 0.70 0.82
5 A' 496 478 1.52 19.26 0.22 0.36
6 A' 143 137 0.03 9.57 0.58 0.73
7 A" 3239 3120 1.75 64.95 0.75 0.86
8 A" 1129 1087 0.01 14.64 0.75 0.86
9 A" 789 760 14.12 10.62 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 6109.9 cm-1
Scaled (by 0.9631) Zero Point Vibrational Energy (zpe) 5884.5 cm-1
See section III.C.1 List or set vibrational scaling factors to change the scale factors used here.
See section III.C.2 Calculate a vibrational scaling factor for a given set of molecules to determine the least squares best scaling factor.
Rotational Constants (cm-1) from geometry optimized at MP2/LANL2DZ
ABC
0.77496 0.02725 0.02646

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/LANL2DZ

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 1.109 0.000
Br2 1.982 0.699 0.000
I3 -1.301 -0.651 0.000
H4 -0.211 1.685 0.908
H5 -0.211 1.685 -0.908

Atom - Atom Distances (Å)
  C1 Br2 I3 H4 H5
C12.02432.18841.09551.0955
Br22.02433.55022.57002.5700
I32.18843.55022.73292.7329
H41.09552.57002.73291.8156
H51.09552.57002.73291.8156

picture of bromoiodomethane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
Br2 C1 I3 114.803 Br2 C1 H4 107.136
Br2 C1 H5 107.136 I3 C1 H4 107.968
I3 C1 H5 107.968 H4 C1 H5 111.915
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability